Description

A vulnerability in the hybrid access control list (ACL) processing of IPv4 packets in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect handling of packets when a specific configuration of the hybrid ACL exists. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass a configured ACL on the affected device. For more information, see the section of this advisory. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.

INFO

Published Date :

2025-03-12T16:12:39.882Z

Last Modified :

2025-03-21T20:33:28.254Z

Source :

cisco
AFFECTED PRODUCTS

The following products are affected by CVE-2025-20144 vulnerability.

Vendors Products
Cisco
  • Ios Xr
  • Ios Xr Software
  • Ncs 540-12z20g-sys-a
  • Ncs 540-12z20g-sys-d
  • Ncs 540-24q2c2dd-sys
  • Ncs 540-24q8l2dd-sys
  • Ncs 540-24z8q2c-sys
  • Ncs 540-28z4c-sys-a
  • Ncs 540-28z4c-sys-d
  • Ncs 540-6z14s-sys-d
  • Ncs 540-6z18g-sys-a
  • Ncs 540-6z18g-sys-d
  • Ncs 540-acc-sys
  • Ncs 540-fh-agg
  • Ncs 540-fh-csr-sys
  • Ncs 540x-12z16g-sys-a
  • Ncs 540x-12z16g-sys-d
  • Ncs 540x-16z4g8q2c-a
  • Ncs 540x-16z4g8q2c-d
  • Ncs 540x-16z8q2c-d
  • Ncs 540x-4z14g2q-a
  • Ncs 540x-4z14g2q-d
  • Ncs 540x-6z18g-sys-a
  • Ncs 540x-6z18g-sys-d
  • Ncs 540x-8z16g-sys-a
  • Ncs 540x-8z16g-sys-d
  • Ncs 540x-acc-sys
  • Ncs 5501
  • Ncs 5501-se
  • Ncs 5502
  • Ncs 5502-se
  • Ncs 5508
  • Ncs 5516
  • Ncs 560-4
  • Ncs 560-7
  • Ncs 57b1-5dse-sys
  • Ncs 57b1-6d24-sys
  • Ncs 57c1-48q6-sys
  • Ncs 57c3-mod-sys
  • Ncs 57d2-18dd-sys
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-20144.

URL Resource
https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/ cve-icon cve-icon
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncs-hybridacl-crMZFfKQ cve-icon cve-icon
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CVSS Vulnerability Scoring System

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